<html>
    <head>
        <meta name="viewport" content="width=device-width; height=device-height;">
        <link rel="stylesheet" href="resource://content-accessible/TopLevelVideoDocument.css">
        <link rel="stylesheet" href="chrome://global/skin/media/TopLevelVideoDocument.css">
        <script type="text/javascript" src="chrome://global/content/TopLevelVideoDocument.js"></script>
        <title>test.mp4</title>
    </head>
    <body>
        <video  width="500px" height="300px" autoplay="autoplay">
            <source src="D:/video/hbg.mp4" type="video/mp4">
        </video>
    </body>
</html>